---
title: "Product Overview"
slug: "product-overview-45-1"
updated: 2026-04-08T03:21:35Z
published: 2026-04-09T02:30:20Z
canonical: "knowledge.akuvox.com/product-overview-45-1"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.akuvox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Product Overview

![](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/image-1775618401843.png)

**Model Specification**

| Display | 7 Inch IPS LCD |
| --- | --- |
| Screen | 7 Inch capacitive touch screen |
| Wi-Fi | IEEE802.11 b/g/n/ax, @2.4GHz |
| RS485 port | ✔ |
| Relay out | 1 |
| Bell in | 1 |
| Alarm Input | 8 |
| Ethernet ports | 1xRJ45, 10/100Mbps adaptive |
| Power Supply | 48V DC connector (if not using NS-2) |

![](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/image-ZEU2UTA9.png)

R20A-2

**Model Specification**

| Camera | 2 Megapixels, automatic lighting |
| --- | --- |
| Inputs | 1 |
| Relays out | 2 |
| RS485 | ✔ |
| Card Reader | 13.56MHz, 125kHz and NFC(only Android) |
| Microphone | 1 |
| Speaker | 1 |
| Tamper Alarm | ✔ |

![](https://cdn.document360.io/f09a6106-e976-455e-b2d0-3d88b5385960/Images/Documentation/image-9M59TG5P.png)

E12S-2

**Model Specification**

| Camera | 2 Megapixels, automatic lighting |
| --- | --- |
| Inputs | 2 |
| Relays out | 1 |
| Bluetooth | Support BT5.0 |
| Card Reader | 13.56MHz and NFC(only Android) |
| TF Card Slot | 1 |
| Microphone | 1 |
| Speaker | 1 |
| Tamper Alarm | ✔ |